Add WithStdout option for osquery's Runner (#5637)

* Add WithStdout option for osquery's Runner 

fetch the osquery output to do something in other flow

* Create osquery-runner-withstdout

* Update osquery.go

orbit/changes/osquery-runner-withstdout

@@ -0,0 +1 @@
+* Add WithStdout option for osquery's Runner

orbit/pkg/osquery/osquery.go

@@ -115,6 +115,14 @@ func WithStderr(w io.Writer) Option {
 	}
 }
 
+// WithStdout sets the runner's cmd's stdout to the given writer.
+func WithStdout(w io.Writer) Option {
+	return func(r *Runner) error {
+		r.cmd.Stdout = w
+		return nil
+	}
+}
+
 func WithLogPath(path string) Option {
 	return func(r *Runner) error {
 		if err := secure.MkdirAll(path, constant.DefaultDirMode); err != nil {